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lectin

American  
[lek-tin] / ˈlɛk tɪn /

noun

Biochemistry.
  1. any of a group of proteins that bind to particular carbohydrates in the manner of an antibody and are commonly extracted from plants for use as an agglutinin, as in clumping red blood cells for blood typing.


lectin British  
/ ˈlɛktɪn /

noun

  1. a type of protein possessing high affinity for a specific sugar; lectins are often highly toxic

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of lectin

1954; < Latin lēct ( us ), past participle of legere to gather, select, read + -in 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

When sialic acids attach to lectin receptors on immune cells, they can switch on an immune dampening pathway.

From Science Daily Dec. 23, 2025

The three researchers set to work to create a sort of chemical probe capable of "freezing" the meeting between sugar and lectin and making it visible through fluorescence.

From Science Daily Nov. 14, 2023

Kidney beans contain a protein called lectin that can lead to nausea, vomiting and diarrhea if they're consumed raw or undercooked.

From Salon Sep. 10, 2022

The beauty of this approach is that it permits the insulin to latch directly onto the sugar-loving lectin in the gel — but only as needed.

From New York Times Nov. 13, 2014

And so the insulin stops working to lower blood-sugar levels precisely when it’s no longer needed, because its sugar chain is held hostage by the lectin.

From New York Times Nov. 13, 2014

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